Ventilator for carriages and ships.



'C. J.-FORRESTER. \/ENT|LATOR FOR CARRI'AYGESI'AND SHIP-s. APPLICATION HLED HINEZI, I913.

Patented Mayf2; 1916.

fiipecificaticn of )Letters Patent.

CHARLES aarrnvs ronnnsrnn, or Mnncnnsrnn, ENGL w u VENTILATOR FOR CARRIAGES AND SHIPS.

Application filed June 27, 1913. Serial No. 776,122

fication. 10

This invention relates to ventilators for railway and othercarriages, tramcars and ships.

The invention has special reference to ventilators of the kind wherein a current of air passing through an air tube creates an up-draft or suction through a suction or ventilating pipe having a bent or curved end located in said tube and opening toward the exit thereof.

The object of the invention is to adapt such a ventilator to railway and other carriages, tramcars and ships and the like which move to and 'fro, or forward and backward, without being themselves re versed or turned around.

In the accompanying drawings Figure 1, is a sectional elevation of one embodiment of theinveniiion; and Figs. 2 and 3 are, respectively, an'elevation and a sectional plan of a modification.

In the drawing and the following description similar letters'of reference indicate like parts.

Referring to Fig. 1, a is an air tube having an inlet end aiand a downwardly turned exit end a Within the air tube a islocated the bent or curved end I? of a suction or ventilating tube 1), said-end 7) opening toward the exit end a of the tube a. The suction or ventilating pipe 6, of course, extendsinto the vehicle or'ship and is led to the required part thereof.- The inlet end a of the air tube a is provided with an enlargement h in which is fitted a smaller inlet 0, so that a space j results between the same and the enlargement To the space j the opposltely disposed inlet (1 is connected by a curved pipe is. By this arrangement Patented May a, rate.

of duplex inlets, air entering-either of the inlets c and d is, without the vuse of a valve or the like, prevented from escaping through the other, and passes through the pipe at and escapes at the exit a thereof, the'passage of said air creating an up-draft or suction in the suction or ventilating pipe 6, whereby the vitiated or impure air the carriage,

cabin, or the like, to whichthe ventilator is fitted, is exhausted through the and passes with said air'to the emft a 1 In applying the duplex air inletsto a van tilator in which the air tube a-is divided by a partition 7 into two'portions g, g, each of which has a downwardly bent exit a and is fitted with a suction or ventiiating pipe I as shown in Figs. 2 and 3, I :provide said portions g, g with passages m, m, and to each of said passages I fit duplex inlets c and d arranged as above described in reference to Fig. 1, By this means each of the suction or ventilating pipes Z5 is rendered double-acting, and has an up-draft or suction created through it in each direction of motion.

I claim i The combination, in a' ventilator,-fof a horizontally arranged, air tube having an exit at one end at an angle'to the lengtl. thereof, a suction pipe extending into the tube and having its end withiit the tube extending toward the exit, an enlarged air inlet passage at the endv of the tube opposite the exit, a reversely disposed inlet pipe cornmunic'ating with said inlet passage,'and a straight inlet tube extending through the passage and having an end less in diameter than the air tube, so that a suction will be created in the suction pipe when air passes through either inlet,

In testimony whereof, I have signed my name to this specification, in the presence f two subscribing witnesses.

cinatrs .iirrars roaarsrra,

\Vitnesses EDM ND VVARD PATTISON, HAROLD WALKER.

' copies of this patent may be obtained for five cents each, by addressing the Wommtsatener at" Eatentt,

.Washilnen, I). Q." 1 

